Aggressive dash of a fiddler crab Ilyoplax pusilla

Waving behavior of fiddler crab Ilyoplax pusilla

A sesarmid crab preys a fiddler crab

Surface mating of a fiddler crab, Uca lactea

Waving behaviour of a fiddler crab, Uca lactea lactea

A fiddler crab caught in a live trap

A change of courtship waving display and pair formation in a fiddler crab

A male fiddler crab captured a female and took her into his burrow

Unhappy interaction between male and female fiddler crab: vol.2

Unhappy interaction between male and female fiddler crab: vol.1

A crab coming out of a hole

Aggressive behaviours of Brachyrhaphis olomina

A Crab and A Shell

A home-shell change in a hermit crab

"Face-washing behaviour" of a mud crab, Macrophthalmus japonicus

Crab on a Rock

A Calappa crab moving a shell

Statuette (Okimono) in the form of a Crab (Kani)

Aggressive interaction between mutilated workers of Diacamma sp. from Japan

Female-female aggressive behaviour of Brachyrhaphis olomina

Foraging behavior of rocky reef crab

A Crab on its Back

(Crab and a Lotus Leaf)

Sword Guard with a Crab

Waving behavior of ocypodid crab Macrophthalmus japonicus